Intramural gas proximal to obstructing carcinoma.
D000230:Adenocarcinoma / Q000150:complications / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D007415:Intestinal Obstruction / Q000000981:diagnostic imaging* / Q000209:etiology; D008875:Middle Aged; D011859:Radiography; D012811:Sigmoid Neoplasms / Q000150:complications / Q000000981:diagnostic imaging*